geolocation-8.x-3.x-dev/modules/geolocation_leaflet/src/Plugin/geolocation/MapFeature/LeafletMaxBounds.php

<?php

namespace Drupal\geolocation_leaflet\Plugin\geolocation\MapFeature;

use Drupal\geolocation\Attribute\MapFeature;
use Drupal\geolocation\MapFeatureBase;
use Drupal\geolocation\MapProviderInterface;

/**
 * Provides Leaflet.
 */
#[MapFeature(
  id: 'leaflet_max_bounds',
  name: new \Drupal\Core\StringTranslation\TranslatableMarkup('Max Bounds'),
  description: new \Drupal\Core\StringTranslation\TranslatableMarkup('Restrict map to set bounds.'),
  type: 'leaflet'
)]
class LeafletMaxBounds extends MapFeatureBase {

  /**
   * {@inheritdoc}
   */
  public static function getDefaultSettings(): array {
    return array_replace_recursive(
      parent::getDefaultSettings(),
      [
        'north' => '',
        'south' => '',
        'east' => '',
        'west' => '',
      ]
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getSettingsForm(array $settings, array $parents = [], ?MapProviderInterface $mapProvider = NULL): array {
    $form = parent::getSettingsForm($settings, $parents, $mapProvider);

    $form['north'] = [
      '#type' => 'textfield',
      '#title' => $this->t('North'),
      '#size' => 15,
      '#default_value' => $settings['north'],
    ];
    $form['south'] = [
      '#type' => 'textfield',
      '#title' => $this->t('South'),
      '#size' => 15,
      '#default_value' => $settings['south'],
    ];
    $form['east'] = [
      '#type' => 'textfield',
      '#title' => $this->t('East'),
      '#size' => 15,
      '#default_value' => $settings['east'],
    ];
    $form['west'] = [
      '#type' => 'textfield',
      '#title' => $this->t('West'),
      '#size' => 15,
      '#default_value' => $settings['west'],
    ];

    return $form;
  }

}